html,body{
    padding: 0;
    margin: 0;
    background-color: red;
}
ul,li{
    padding: 0;
    margin: 0;
    list-style:none;
}
.df{
    display: flex;
}
.c-red{
    color:red;
}
.c-green{
    color:green;
}
.c-yel{
    color:#fc0;
}